diff options
Diffstat (limited to 'drivers/usb/storage/scsiglue.c')
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 8c1e2954f3b9..3fcde9f0fa5f 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -73,6 +73,7 @@ static const char* host_info(struct Scsi_Host *host) static int slave_alloc (struct scsi_device *sdev) { struct us_data *us = host_to_us(sdev->host); + struct usb_host_endpoint *bulk_in_ep; /* * Set the INQUIRY transfer length to 36. We don't use any of @@ -84,12 +85,13 @@ static int slave_alloc (struct scsi_device *sdev) /* Scatter-gather buffers (all but the last) must have a length * divisible by the bulk maxpacket size. Otherwise a data packet * would end up being short, causing a premature end to the data - * transfer. Since high-speed bulk pipes have a maxpacket size - * of 512, we'll use that as the scsi device queue's DMA alignment - * mask. Guaranteeing proper alignment of the first buffer will - * have the desired effect because, except at the beginning and - * the end, scatter-gather buffers follow page boundaries. */ - blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1)); + * transfer. We'll use the maxpacket value of the bulk-IN pipe + * to set the SCSI device queue's DMA alignment mask. + */ + bulk_in_ep = us->pusb_dev->ep_in[usb_pipeendpoint(us->recv_bulk_pipe)]; + blk_queue_update_dma_alignment(sdev->request_queue, + le16_to_cpu(bulk_in_ep->desc.wMaxPacketSize) - 1); + /* wMaxPacketSize must be a power of 2 */ /* * The UFI spec treates the Peripheral Qualifier bits in an @@ -132,7 +134,7 @@ static int slave_configure(struct scsi_device *sdev) /* Disk-type devices use MODE SENSE(6) if the protocol * (SubClass) is Transparent SCSI, otherwise they use * MODE SENSE(10). */ - if (us->subclass != US_SC_SCSI) + if (us->subclass != US_SC_SCSI && us->subclass != US_SC_CYP_ATACB) sdev->use_10_for_ms = 1; /* Many disks only accept MODE SENSE transfer lengths of @@ -226,12 +228,12 @@ static int queuecommand(struct scsi_cmnd *srb, { struct us_data *us = host_to_us(srb->device->host); - US_DEBUGP("%s called\n", __FUNCTION__); + US_DEBUGP("%s called\n", __func__); /* check for state-transition errors */ if (us->srb != NULL) { printk(KERN_ERR USB_STORAGE "Error in %s: us->srb = %p\n", - __FUNCTION__, us->srb); + __func__, us->srb); return SCSI_MLQUEUE_HOST_BUSY; } @@ -260,7 +262,7 @@ static int command_abort(struct scsi_cmnd *srb) { struct us_data *us = host_to_us(srb->device->host); - US_DEBUGP("%s called\n", __FUNCTION__); + US_DEBUGP("%s called\n", __func__); /* us->srb together with the TIMED_OUT, RESETTING, and ABORTING * bits are protected by the host lock. */ @@ -297,7 +299,7 @@ static int device_reset(struct scsi_cmnd *srb) struct us_data *us = host_to_us(srb->device->host); int result; - US_DEBUGP("%s called\n", __FUNCTION__); + US_DEBUGP("%s called\n", __func__); /* lock the device pointers and do the reset */ mutex_lock(&(us->dev_mutex)); @@ -313,7 +315,7 @@ static int bus_reset(struct scsi_cmnd *srb) struct us_data *us = host_to_us(srb->device->host); int result; - US_DEBUGP("%s called\n", __FUNCTION__); + US_DEBUGP("%s called\n", __func__); result = usb_stor_port_reset(us); return result < 0 ? FAILED : SUCCESS; } |